Merge pull request #43 from aatmanvaidya/docs-ocr

docs: documentation for tesseract ocr operator

docs/src/pages/operators/detect-text-in-image-tesseract.mdx

@@ -1 +1,17 @@
-## documentation for tesseract OCR
+## Documentation for Tesseract OCR Operator
+
+For each language support, we need to install separate tesseract operators for each language. Right now the current operator only supports English and Hindi languages. 
+
+For Linux, you can follow these links to understand how and what modules to install for each language.
+- https://tesseract-ocr.github.io/tessdoc/Installation.html
+- https://www.loc.gov/standards/iso639-2/php/code_list.php
+
+To extract text from an image, we pass the image through a tesseract function like this
+
+```
+data = pytesseract.image_to_string(image, lang='eng+hin', config='--psm 6 --oem 1')
+```
+
+Here the config settings help us define some more insight into the image and LSTM blocks for the image extraction engines. 
+
+You can take a look at the operator and the test of the operator for the entire code.

src/api/core/operators/detect_text_in_image_tesseract.py

@@ -7,20 +7,20 @@ def initialize(param):
 
     global config_psm
     global config_oem
+    config_psm = 6
+    config_oem = 1
     global Image
     global pytesseract
     global requests
     global BytesIO
-    config_psm = 6
-    config_oem = 1
     import pytesseract
     from PIL import Image
     from io import BytesIO
     import requests
 
 def run(image_path):
     with Image.open(image_path) as load_image:
-        data = pytesseract.image_to_string(load_image, lang='eng+hin')
+        data = pytesseract.image_to_string(load_image, lang='eng+hin', config='--psm 6 --oem 1')
     return data
 
 def cleanup(param):